Vibratory converter.



Patented Jan. 28, 1919.

2 SHEETS-SHEE l.

0. M. LEICH.

vlRAToRY CONVERTER.

APPLICATION FILED SEPT.2B. 1915.

1,292,81 5. Patented Jan. 28, 1919.

2 SHEETS-SHEEY 2.

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UNITED STATES PATENT UFFICE.

osCAE M. LEICII, or GENOA, ILLINOIS, AssIeNoE To LEIoH ELECTRIC COMPANY,or GENOA, ILLINOIS.

VIBRATORY CONVERTER.

Specification of Letters Patent.

Patented Jan. 28, 1919.

Application le'd September 28, 1915. Serial No. 52,995.

To all whom t may concern Be it known that I1,- @soA-Rf M. LEIoH, acitizen of the United States, residing at Genoa, in the county orDek-alb and State of Illinois, have invented a certain newl and usefulImprovement in .Vibratory Gon'- verters, of which the following is afull, clear, concise, and exact description, reference being had to theaccompanying drawings, forming a part 'of this* specification.

My invention relates to Vibratory converters, and has for its object theprovision of an improved converter'of this kind' which is anVimprovement morelv particularly of my co-pending application Serial No.16,564', filed March 24, 1915-. My invention contemplates in its generalformV the provision of a mechanism which can' be' supplied' withalternating current, change this" alternating currentintouni-directional' current, andl lthen modify this uni-directionaicurrent intoan alternating current of a diiferent frequency than theimpressed alternating current.

My il'iventioil' is particularly designed for use' in connection with'vibrators for use in transforming alternating current into pulsatingycurrent. using but oneA vibrator in` connection with instrumentalitie'ssuch. as this; and' asl showin in" my copendingl application Sinal No:16,564', a' differentially wound:- tlransformer' is required as' set'forth in* said (id-pending application. To avoid the use' of this'differentially wound transformer 1? utilize twin vibrators 'sothat anordinary style of' transformer can be u'sed, thu-s extremely simplifyingthe construction andl making the operation more uniform.

Ina specific-,form in windt my invention n'dsf muohapplicaton, suct as"providing ngingmechansm for telephone exchanges, this mechanism' mav bedirectly connected to tHe-commerciali: rrn or alternati-ng current, :mdwill transforml thiscnrrent i'rito alternating current of a suitablefrequency for ringing' purposes;

Tir a: coi-pending' application Seriall No: 169,637, tiled?ltfayl'),L19197, which is ai divi'- sion-- of it-lii's application, I claim incombination tlle-v system usingA the' twin'- rectifier vibra-tors and ythe` pol-'e' changer vibrator, the' claims of'tliis application beingconfined to the rectifier vibrators and their connections't Inillustrating my invention I have chosen this particular form` and it isthis particular form I Will now describe in connection with theaccompanying drawings illustrat ing such form, in which- Figure 1 is afront View of a vibratory converter constructed in accordance with myinvention, and

F 2 sets forth the circuit arrangements.

Referring more particularly to Fig. 2, l show a source of alternatingcurrent. 1 which is ledA through fuses 2 by means of the switch lbars 3and 3a to terminals 12 and 14. To terminal 12 is connected terminal' L1of the impedance. coil 6, and terminal 11 is connected through aresistance 26, preferably a lamp, to terminal 5 of the impedance coil6.- A circuit extends from the binding post 4 by means of the conductor7, to one terminal 8 of a vibrator 9, the current then extending throughthe coils of said vibrator by means of conductor 10, through the Vcoilsof the twin vibrator 11, condenser lf3, conductor 15, conductor 16,conductor 60, to the terminal 11. Twin vibrators 9 and 11- are thus alsoconnected directly across the circuit from the generator 1. These twinvibrators 9 and 11 vibrate A:their armatures and consequently tlie arms18 and 19 respectively in accordance with the' frequency of the currentsupplied by the generator 1-, the condenser 13 serving t0 cause thecurrent breaks due to these vibrations to occur at the proper time, thatis, when the currentis passing through its zero point. The arm 18cooperates respectively with the contacts 20 and 21, and the arml 119coopera-tes respectively with the contacts 22l and 23. The contacts 2Oand 23 are connected together by means of the conductor 24', which thenextends by Way of conduct-or 7 to the terminal 4, which is one' side ofthe impressedV circuit. The contacts 21' and 22' are connected togetherby mea-'ns of a conductor 25, and this conductor 25- is connectedl zbythe conductor 17 to the terminal 5, whichv represents the other side ofthe impressed circuit. The conductor 17 has a'- resistance 26 includedin circuit therewith'. It has been found in the operation o'f twin1vibrators that at times there may be some inequalities in the operationof the arms 18 and 19, these arms momentarily bcing out of step, thusmaking a momentary wrongful contact. Under these circum- -stroy theinstrument.

the twin vibrators. The arm 18 is connected by means of conductor 27with the contact terminal 28, and the arm 19 is connected by means ofconductor 29 to the contact terminal 30. We thus have at the contactterminals 2 and 30 a uni-directional current as the arms 18 and 1.9vibrate in accordance with the requency of the impressed current, andthus keep the terminals 28 and 30 positive and negative respectively.These terminals 28 and 30 are then connected by means of conductors 31and 32 respectively to the contact posts 33 and 34. These contact postsare in association with spring contacts 35, 35, car ried byva vibratingrod-36 which is operable by the electromagnet 37 of the vibrator 38. Thearms 35 are connected together and extend by means of conductor 39 toone terminal of a primary winding 40 of theV transformer 41, the otherterminal of this primary winding being ,connected by means of conductor42 with a central -point 43 of the impedance winding 6. Thus we havealternating current established .in the primary winding 40 cfa frequencycorresponding to the vibrations of the vibratory arm 36. .AI secondarywinding 44 is in inductive relation with the primary winding 40` andfurnishes its full voltage to the conductors 45 and 46. A." conductor 47is takenfrom an intermediate portion of the secondary winding 44 sothatltheconductor marked G may represent the'conductor that is alwaysused from this secondary winding for thelocai circuit, andthe conductorsmarked L and H can be used -for alow or high voltage as.de.

sired. The terminals ofthe primarywinding 40 are bridged by thecondenser 48 to smooth out the wave, and the terminals of the secondaryIwinding .are bridged by the condenser 49,for a similar purpose. .Thevibrator 38 hasya contact spring 50 which cooperates with thestationarycontact 51. The current to operatethe vibrator 38 is fur.-nished from thefmaincircuit supplied by the generator l, A and can betraced from the binding post 4,V via conductor conductor 52, arm 36,contact elements 50 and 51, con ductor 53coils 37, conductor 54,condenser 55, conductor 16, to the terminal 14'. Whenever t I arm 36 is.attracted and circuit throu fthe elements 50 and 51 broken, .the circuitis not entirely broken through the coils 37 as they are still includedwith the resistance 56, but -thatdoes not energize them sufficiently-toprevent retraction of the armature36. Y The lamp 26 it will be seen isdirectly in circuitv and prevents diiiiculty .even if the machine doesnot operateproperly -due .to

a temporary variation in the positions ot the elements 18 and 19. I am'thus enabled alternating current. The twin vibrators 9 and 11 serve tocontrol the actuations a great deal better than if a single vibratorwith a .plurality of contacts is used, as the elements y 18 and19 mustreadily respond to the current to attain the best results.

The parts mentioned in this connection are all mounted on a suitablebaseplate 57 as shown in Fig. 1, the fuse and switch devices being mountedupon a switch base 58. The remaining parts can be readily identified. Itwill thus be seen that a self-contained panel, including all of theelements to provide a device of that character is herein disclosed.

From what has been described the nature of my invention will be readilyclear to those skilled in the art, and it will also be clear that myinvention is susceptible of ni odiicationsI within thev scope of theappended claims. y

,Having however thus described one `form of my invention, what I claimas new and desire to secure by Letters Patent is:

l. A current modifying `system of the character described comprisingl asource of alternating current, a pair of twin vibrators vibrating insynchronism with the alternations of said alternating current, a consumption `circuit to which said vibrators are adapted to supplyunidirectional current., each of ;said vibrators havingy a -vibratoryelement, 4said elements representing each to each different pclarities,and means for preventing fthel establishmentof a shortcircuit acrosssaid source of. alternatingpcurrent upon improper actuation of, saidelements.

e y,2. A. current modifying .system of. `the charactervdescribedcomprising asource of alternatingcurrent, a pair of twin vibratorsvibrating in synchronism with-the alternationsof said alternatingcurrent, a consump-` tion circuit to whichl said vibrators are adaptedtosup ly uni directional current, each of said vibrators having avibratory element, said elements representing each to each differentpolarities, anda resistance interposed between said vibrators and saidsource for preventing the establishment of a short. circuit across saidsource of. alternatingl current, upon improper actuations ofsaidelements. y

3. A current modifying system of the character described comprising asource of alternating current, a pair of twin vibrators vibratingmsynchromsmwith the alternations of said alternating current, a =consumption circuit to -which said vibrators are adapted to supplyunidirectional current, each of said vibrators having a vbratory elementand coperating contacts, said Vele.-

ments representing each toeach different polarities, and a resistanceinterposed between said contacts and said source to prevent theestablishment of a short circuit across said source of alternatingcurrent upon improper actuations of said elements.

4;. A current modifying system of the character described comprising asource of alternating current, a pair 0f twin vibrators vibrating insynchronism with the alternations of said alternating current, aconsumption circuit to which said vibrators are adapted to supplyunidirectional current, each of said vibrators having a vibratoryelement and coperating contacts associated with the opposite s'rides ofsaid source of alternating current, said elements representing each toeach dierent pol-arities, and a resistance interposed between saidcontacts and said source to prevent the establishment of a shortcirculit across said source of alternating current upon improperactuations of said elements.

5. A current modifying-system of the character described comprising asource of alternating current, a vibrator vibrating in synchronism Iwiththe alternations of said a1ternating current, a consumption circuittowhich said vibrator is adapted to supply uni-directional current, saidVibrator having a vibrav tory element and -coperating contacts, Saidcontacts being connected to opposite polarities of said source ofalternating current, and a resistance in series with one of saidcontacts to prevent the establishment of a short circuitl across saidsource of alternating current upon improper actuation of said vibratoryelement.

6. A current modifying system ofthe character described comprising asource of alternating current, a vibrator vibrating in synchronism withthe alternations of said alternating current, a consumption circuit towhich said vibrator is adapted to supply unidirectional current, saidvibrator having a vibratory element and coperating contacts, saidcontacts being connected to opposite polarities of said source ofalternating current, said vibratory element comprising in part a iatstrip and said contacts being mounted on opposite sides of said fiatstrip, and a resistance in series with one of said contacts to preventthe establishment of a short circuit across said source of alternatingcurrent upon improper actuation of said vibratory element.

In witness whereof, I hereunto subscribe my name this 24th day ofSeptember, A. D., 1915.

OSCAR M. LEICH.

`Witnessesz O. M. WERMIGH, HAZEL A. JONES.

Copies of this patent may be obtained for ve centi each, by addressingthe Commissioner of Patenti,

Washington, D. C. A

